In Massachusetts, electricity rate including delivery is about 30 cents/kWh, so 100 miles would cost 0.3*34.6 = $10.38. Most combustion sedans have average driving distance of 30 miles/gallon, 100 miles would cost 3.3 gallon and $10 with $3/gallon price. There is no saving on fuel cost with EV in the United States.

A few points:
1. Average electricity cost in USA is not 30 cents/kWh, it is closer to 15 cents/kWh.
2. Most ICE sedans do NOT get a real-life 30 mi/gal.
3. Comparable performance ICE sedans get less than 20 mi/gal in the real world.

My personal experience is -
* Previous ICE sport sedan - got about 50 miles out of $10 of gasoline.
* Current EV sport sedan - get over 250 miles out of $10 of electricity at home (50 weeks/yr).
* Current EV sport sedan - get about 110 miles out of $10 of electricity on the road (2 weeks/yr)

Also -
Previous ICE sedan - rarely got free gasoline, only when redeeming points or discounts.
Current EV sedan - get free charging all the time, at the supermarket, at the movie theater, at TopGolf, at two of the hotels I stayed at last summer, at city hall, at the courthouse, etc.